Digi 90000566_H manual Modem Emulation AT Command Set, Emulation configuration scenario

Modem Emulation AT Command Set

Modem Emulation AT Command Set

	The following commands can be issued to perform actions in a modem-
	emulation configuration scenario.
AT	Function	Result
Command		Code
	When in data mode, this command causes the modem to switch to
n+++n	command mode. The value of n corresponds to the required delay before
	and after the escape sequence is entered. The delay can be changed by
	modifying S-register 12. The escape character can be changed by
	modifying S-register 2.
A/	Repeats the last command string.
AT?	Prints the value of the last-accessed S-register.
ATA	Answer command: Answers an incoming TCP connection and switches to
	data mode.
	Used to connect to a remote network device. This command directs the Digi
	device to go on-line, dial according to the IP address entered as follows,
	and attempt to establish a TCP connection.
	Dial Modifiers. The valid dial string parameters are described below.
	Punctuation characters may be used for clarity with parentheses, hyphen,
	and spaces being ignored.
	• 0-9: DTMF digits 0 through 9.
	• . (period): Dot notation used for IP addresses. IP addresses are written
	as four numbers separated by periods, where the first number is
ATD	between 1 and 255, and the other three numbers are between 0 and
(ipaddress):	255. Enter the IP address in the format xxx.xxx.xxx.xxx
(ipport)	• : (colon): Colon notation used for the TCP port.
	• L: Redial the last number. The modem will reconnect to the last IP
	address accessed. The L must immediately follow the D, and any
	following characters are ignored.
	• P: This command is accepted but not acted on.
	• T: This command is accepted but not acted on.
	• R: This command is accepted but not acted on.
	• , (comma): This command is accepted but not acted on.
	Command echo. The Digi device enables or disables the echo of characters
	to the DTE according to the parameter supplied. The parameter value, if	OK n=0 or 1
ATEn	valid, is written to S14 bit 1.	ERROR
	• E0: Disables command echo.
		Otherwise
	• E1: Enables command echo.
ATH	Disconnect (Hang up) command.	OK n=0 or 1
		ERROR
	H0, H1: Hangs up the TCP connection if a connection is active.
		Otherwise
	Identification command.
	• I0, I1: Reports product name.	OK n=0 or 9
ATIn	• I3: Reports product name, firmware revision.
		ERROR
	• I4: Reports product configuration.	Otherwise
	• I6: Reports network connection information.

264 Chapter 3 Modem Emulation Commands